Patents by Inventor Sylvain Danda

Sylvain Danda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for the purification of a medium containing organic waste
    Patent number: 5914040
    Abstract: The present invention relates to a process for the purification of a medium containing organic waste. The process according to the present invention is characterized in that the starting medium (or effluent) containing the organic waste is subjected to the following stages: (i) treatment with at least one oxidizing agent; (ii) treatment with at least one flocculating agent; (iii) treatment with at least one polyelectrolyte, and in that the effluent obtained on conclusion of all of these stages is subjected to a filtration stage (iv), whereby a filtration cake and a filtrate are obtained. The process according to the present invention is more particularly useful for the treatment of pig manure.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: June 22, 1999
    Assignee: Rhone-Poulenc Chimie
    Inventors: Yvette Pescher, Jean-Paul Raes, Sylvain Danda, Bernard Castelas, Fran.cedilla.ois Rabatel, Jose Morales, Jean Bonfill
  • Coagulants containing basic aluminum polychloride or polychlorosulfatean iron compound, and an alkali or alkyline earth metall halide
    Patent number: 5597510
    Abstract: Coagulant compositions, advantageously solvent (water) solution thereof, well suited for the treatment/purification of impure aqueous media, e.g., surface waters, wastewaters, effluents, etc., via sedimentation technique, comprise (i) at least one basic aluminum polychloride or polychlorosulfate, (ii) at least one iron(II) and/or iron(III) compound, and (iii) at least one alkali metal and/or alkaline earth metal halide.
    Type: Grant
    Filed: May 24, 1994
    Date of Patent: January 28, 1997
    Assignee: Kemrhone France
    Inventors: Sylvain Danda, Magnus Kvant, Yvette Pescher
  • Purification of aqueous media using aluminum polychloride/iron compound/salt-based coagulant compositions
    Patent number: 5587086
    Abstract: Coagulant compositions, advantageously solvent (water) solution thereof, well suited for the treatment/purification of impure aqueous media, e.g., surface waters, wastewaters, effluents, etc., via sedimentation technique, comprise (i) at least one basic aluminum polychloride or polychlorosulfate, (ii) at least one iron(II) and/or iron(III) compound, and (iii) at least one alkali metal and/or alkaline earth metal halide.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: December 24, 1996
    Assignee: Kemrhone France
    Inventors: Sylvain Danda, Magnus Kvant, Yvette Pescher